Fadell worked at Apple from 2001 to 2008. After leaving Apple, he and a partner founded Nest in 2010 - and now he works for Google.

It's unclear whether Google will leverage Fadell's talents in any other ways, but statements from Google CEO Larry Page and Fadell himself make it clear that Fadell and his Nest co-founder, Matt Rogers, will stay on at Google.

Self-congratulations all around

"Nest's founders, Tony Fadell and Matt Rogers, have built a tremendous team that we are excited to welcome into the Google family," Page said in a statement.

He continued, "They're already delivering amazing products you can buy right now - thermostats that save energy and smoke/CO alarms that can help keep your family safe. We are excited to bring great experiences to more homes in more countries and fulfill their dreams!"

"We're thrilled to join Google," Fadell said in the same announcement. "With their support, Nest will be even better placed to build simple, thoughtful devices that make life easier at home, and that have a positive impact on the world."

Nest will continue to operate under its original leadership and with its own brand, distinct from Google.

The transaction between the two companies just needs to be finalized, which includes regulatory approval from the U.S. government. Google expects that to happen "in the next few months."

Loving 'those unloved things'

As 9to5Mac points out, Google had previously invested in Nest, which launched a smart thermostat in 2011 and a smart smoke/CO detector in 2013.